171143045 has 4 divisors (see below), whose sum is σ = 205371660. Its totient is φ = 136914432.

The previous prime is 171143009. The next prime is 171143047. The reversal of 171143045 is 540341171.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35117476 + 136025569 = 5926^2 + 11663^2 .

It is a cyclic number.

It is not a de Polignac number, because 171143045 - 2⁸ = 171142789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171143047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17114300 + ... + 17114309.

It is an arithmetic number, because the mean of its divisors is an integer number (51342915).

Almost surely, 2^171143045 is an apocalyptic number.

It is an amenable number.

171143045 is a deficient number, since it is larger than the sum of its proper divisors (34228615).

171143045 is an equidigital number, since it uses as much as digits as its factorization.

171143045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34228614.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 171143045 is about 13082.1651495462. The cubic root of 171143045 is about 555.2046373586.

The spelling of 171143045 in words is "one hundred seventy-one million, one hundred forty-three thousand, forty-five".